Lenovo HS15 User Manual page 9

Sensitivity
Frequency range
Microphone
Mic sensitivity
114dB±3dB
20Hz-20kHz
6.0*2.7mm
-38±3dB
Cable length
LED working voltage
Working current
Headset jack
2.2m ±0.15
DC5V±5%
<100mA
USB+3.5mm 4 pin jack